On Fri, May 27, 2011 at 10:54 PM, Mulyadi Santosa <mulyadi.santosa@xxxxxxxxx> wrote:
Hi...
I agree with Daniel, but I suggest you to think about it: in reading
On Fri, May 27, 2011 at 17:49, sandeep kumar <coolsandyforyou@xxxxxxxxx> wrote:
> Now the question is can we memory map a one device resource(say some
> iomemory) to two different memory locations?
> the other way of seeing at this question is,
> Will ioremap() gives different 'virtual addresses' when called multiple
> times?
operation, maybe it's ok, no concurrency issues need to be taken
care...but how about writing? unless we're sure they are atomically or
uninterruptible, i see a chance that race condition might happen here.
Actually it's similar when you map a file into two different VMA and
write into it, correct?
Don't you think it would also be reducing the memory map space in RAM
which is a critical resource and many otherÂdriversÂwould be denied
the mapping of there IO resources?Â
--
regards,
Mulyadi Santosa
Freelance Linux trainer and consultant
blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com
--
regards,
Mulyadi Santosa
Freelance Linux trainer and consultant
blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com
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